Die-sinking machine



April 6 1926. 1,580,097

L. G. BAYRER DIE SINKING MACHINE Filed 'Oct. 28, 1922 2 Sheets-Sheet 1 fINVETGR.

ATTOR EY.

2 Sheets-Sheet 2 UEWEE L. G. BAYRER DIE smxme MACHINE Filed Oct. 28. 1922 April 6 1926.

ATTORNEY.

luv

Patented Apr. 6, 1926 UNITED. STATES,

' PATENYTVJ'QFFICE' 1 0 15. or. 34353123,, or BUFFALO, NEW YORK.

pmesmxme Anlilication filed October To all whom, it mccy concern: Be it known that I, Loni-s citizen of the United States, residing at Buffalo, in the county of'Erie andv Stateofi provide animproved"construction generally similar to that discl'osedfin my Patent No; 1,354,942granted Qctober 5, 1-920.

Onef feature which is advantageous is that I provide all oftheoperating' meohanisnr for varying-the bodily movements'and adjustments of the tool spindle carriage within a closedhou sing and" mount the controlling mechanisms for thiscarriage all at one side of the carriage. Another feature which is'advantageousis that the control mechanism for this carriage is more convenientlyarrangedfor operation bythe workman, and the meansfor adjusting the throw of' the eccentrics and the spindle carriage is adapted to be more rapidly adj usted and its adjustment locked to prevent accidental displacement. "Also this 3 adjustment may be accurately deter: mined by an improved form of" graduated Another object of the inventionis to pro vide ineansfor lockingthe tool spindle carriage securely and-rigidly inanyposition so that'the machine may be used as a' standard vertical milling machine. I

A still further object of' the invention: is to provide improved driving means for the tool spindle so thatthe bodily movements of the carriage will not; effect the continuous I rotationof'the spindle.

Another important object of the" invention is to provide worm and wheel mechanisms for bodily movingthe carriage; and also for varyingits radius ofropera-tion. so that these means may be accuratelyand con= veniently controlled. 7 i x lVith these and other objects in vie-w, my

. invention consists in the featuresofconli A-Ynnn, a

to die sinking rna-- 2a, 1922,. Serial no. 597,614.

struction and operation set forth in. the folaccompanyingd n In the accompanying t'ion, I have shown my'invention embodied 'ina. die sinking machine but itwillzbe un.- derstood that the invention can be other.- WisecmbQdied" and that the drawings;- are notto be construed: as definingon limiting the scope off the. invention, the claims appended hereto being relied. uponpfor that purpose. I In the drawings:

Figure 1 is ai side elevationof a dieasihkingmachine, partsv being broken away: to

' more 7 clearly disclose-the 'presentiinventionz.

Fig. :Zis a plan viewv of the'rnachine. 1

lowing: pecification and"illus trated the drawings annexed hereto and forming a part of:th1's.-spec1h ca.-'

Fig; is a centrallsectionalView of the machine t-aken online of Fig-.4.

Fig. 418 a horlzontal'sectional'view taken on l1ne4e4- of Fig. v

the controlling 'mechanism for the spindle carrying carriage.

Fig; 6: is: a details view: of. the driving .mean's for the spindle, and; p r

Fig. 7 isa detail vie'w of' my. improved dial. 'j I I In the above mentioned drawings, l have Fig. 5-15 a front view in section? showing I 7 shown but one modification;of the-invention whicliis no w= deemed preferable but: it. is to be understood that changes and modifica time may be made Within the: scope I of the appended claims without departing i the spirit of the invention.

Briefly, my invention in its-v broadest from" aspect comprises: the following. principalv parts: first, a 'frame'; second,'- acentrally mounted carriage or head having a tool spindle mounted vertically; near one end; third, compoundeccentrics comprising inner and; outer eccentrics engaging theytool-carria-ge "or 'ahead and havingthe shaftson whichthe innereccentrics are fixed mounted intlie frame; fourth, worm and wheel means forsimultaneously- Varying the throw of these eccentrics; fifth, worm and wheel means for simultaneously rotating the outer eccentrics-relative to-the inner eccentrics in any position ofjadjustment; sixth, means to indicate-the adjustment or throw for which the'compound eccentrics are adjusted, all

I mentof the knee 11 or carriage of these means for controlling the position and throw of the spindle carrying carriage or head being mounted upon one side of the frame; seventh, improved means for driving the spindle; and eighth, means for counterbalancing the weight of the carriage or head.

Referring mere in detail to the figures of the drawings, I provide a frame 10 similar in general outline to that disclosed in the above mentioned patent. This frame 10 is provided with an adjustable knee 11 on which is a movable carriage 12 of usual form. On this carria e 12, work A of any description may be adjustably secured and its vertical or horizontal position varied within the capacity of the machine by movetrally mounted within the upper portion of the frame is a spindle carrying carriage or head 15, the adjusting and controlling means for which comprise the particular object of the present invention.

On opposite sides of the spindle carrying carriage 15 are guiding surfaces 16 with which the side walls of the frame which form guideways for the carriage may slidably contact. In this way, the spindle head 15 may be readily moved between portions of the frame 10 in accordance with movements of the controlling mechanism; presently to be described. In order to secure the head 15 in fixed position so that the machine may be used for vertical milling operations a bolt 17 is provided extending through the frame 10 from side to side and having a clamping nut 18 on one side. By means of the short arm or lever 19 extending from this nut 18, the bolt 17 may be tightened thus tightening the sides of the frame 10 against the carriage 15 whereby the head is securely clamped.

Vertically extending through this carriage 15 near one end is a vertical driving shaft 20 adapted to be connected with the driving pulley 21 and main driving shaft 22 of the machine through the bevel gears 23 and 24 shown. Near the upper end of this vertical shaft 20 is a driving pulley 25 adapted to be placed in driving connection by means of a belt 26 with a pulley 27 mounted on the upper end of the tool spindle 28. For convenience, an idler pulley 29 is interposed betweenthese two pulleys 25 and 27 in order to maintain constant tension in the driving belt 26. As seen in Fig. 1, the bevel gear 23 on the main driving shaft 22 is keyed thereto and the shaft 22 splined to the driving pulley 21 so that this bevel gear 23 together with the bevel gear 24 on the vertical shaft 20 and the main shaft 22 may be laterally movable. As shown in Figs. 1 and 6, the bevel gear 23 on the main driving shaft 22 is maintained in mesh with its mating bevel gear 24 by the member 30 within which the Cenbevel gear 24 is rotatablv mounted. the bevel gear 23 being held adjacent the member 30 by the collars shown. As the spindle carriage 15 has a vertical movement as well as a horizontal one, the pulley 25 at the upper end of the vertical shaft 20 is splined to its shaft in order that the vertical shaft 20 may slide through its rotating member about which the pulley 25 is mounted in accordance with the movement of the carriage. Preferably, and as shown, the member 30 is in the form of a yoke surrounding the shaft 22 and enclosing the bevel gear 24. it also surrounds the shaft 20. The member 30 is preferably provided with a plate or cover 31 so that the parts may be conveniently assembled, Ball bearings 33 mounted within the member provide convenient rotatable and thrust bearings for the lower end of the shaft 20.

Extending transversely through the spindle car huge 15 are two spaced circular openings 34 in which the outer eccentrics 35 of ring form may rotate. These eccentrics are mounted on shafts 36 provided with eccentrics 36 preferably formed integrally therewith and extend through suitable bearings 37 in the frame 10 of the machine. As shown, means are provided for varying the throw of these outer eccentrics relative to the eccentrics 36 on shafts 36 by relative rotation of the eccentric rings 35 about shafts 36. As these means, however, are substan tially identical with the means disclosed in the above mentioned patent, further desc i1 tion thereof is not. thought to be necessary. It will be sufficient to state that by rotating the shafts 38 and pinions 39 provided within the eccentrics on shaft 36, relative to the eccentric rings 35, the effective throw of the eccentric rings 35 may be materially varied, and, as both of these eccentric rings 35 are adapted to be adjusted simultaneously and equally, it will be seen that the bodily movement given to the tool spindle carriage or head 15, which is always of arcuate form, may be restricted to any radius less than a radius equal to the maximum throw of the eccentrics 35 about the axis of shafts 36. As shown in Figs. 3 and 4, the pinions 39 engage teeth 35 provided on an internal surface of the eccentric rings 35.

In order to rotate the eccentric rings 35 and eccentric shafts 36 rigidly together after they have been adjusted for the desired throw, gears 40 are keyed directly to the eccentric shafts 36, both of these gear" 40 being in mesh with a central gear 41 mounted on and rotating upon a fixed stud 42 outstanding horizontally from the frame 10. Adjacent this central gear 41 is a worm Wheel 43 preferably formed integrally therewith and meshing with this worm wheel 43 is a worm 44 on a shaft 45 extending forwardly. On the forward end of this shaft 45 is a hand wheel it means of which the oentral gear 4 1 and therefore the eccentric rings 35 and eccentric 36, may be rotated through arcs of any angle or about complete circles for they are 'i astenedthereto and in mesh with these ears V is a eentral'gear- 51 rotatable; upon a see-ye,

extension ofthe central gear ll aboye nenedh gear? .0 upon P i n shaf s;

38 and alsothose'on the eccentric shafts 36 are equa t e h w en and. he ce tr l s a i a 5. w hi h theyrespestir r m s a als eqii w l Seen tem he. a v tha by. vary g th re at e engula tnss t on f the wo ent a a 4 nd; 1 pon th st d: 42 outstanding from the fraine'lO that the throw of the eccentrierings 35 relatiye to h xis o shaf s- 35 M11 esi nult ne esly Varied. In order to ac con plishthis adjhstmee rea ly nd w e -y, I pror d a worm wheel 5 5 forn ed integrally or keyed to the oentralg'ear 51in mesh with the gears on "the pin en. ha t wi e e pi vide a housing 55 keyed upon the end of the sleeve carrying the worin wheel 45 andgear 4Ll in1nesh with the gear. 40 keyed direct to eccentric shafts 36. In thisfho sing. 56 I mount a small shaft 5.7 carrying a worni 58 in ine sh with, the worini wheel 55; A

hand wheel 59v is provided onythis worm) shaft 57. by means of. which the adjustfi Q-nt of the worm wheel 55. relative t9 thefhoiisi ing 56 mayftakeplaee. I also provi e, loo-king niea-ns in theform of a clampingiscrew 59 for securely clamping the WO lTi Il Shaft. 57: in any adjusted positiontomaintain any ju tm nt 9 h c he 'es nt iin s,

are set. 1 Preferably the housing 56 is provided with an areu a te opening 60 and a zero line 61 adjacent gradnations' 62'. is proyi'dedon the "f rward face (if the worm wh'e'ert'5 $16. that theoperator at alltiines by. adjustment for.' which the "rijngS 315 are set relatiye to shafts 86 and thus inay'" know the radius of bodily movement o fftlie spin;- dle carriage or head 15..

The graduationsi62 are preferably;

'. vided' in a" separate plate 63 which maybe erma ently fastened onthe forward 'fii'ceof the worm wlieel""5 5 Pre'frably; @l$ 6 the graduations extend 'th 'r'o igh 'oiit 'th entire' circumference of thisijlate' EisT'indicated in Fig. 1. In orde to, agcomp'll hj th'iskh ratio of the' gears 39, 35 50'. that one complete" revo utio'rij' of get "51 A relative to 'thefgea'r. 4 1.thehousingl ti varies thejdiaineterdof tte"'are""gh,r 1 11f thatftlie graduations Cannot be uniformly d r it dfd f th 'p f 6. f t e r ason. th va y n the re a i e. a gu a p s iens. Ofth ntfi$ 352x 21 3 d s n forinly. Vary the stroke; 1, theretore, grad fate this plate 33 vwith indicia acenratelydis P 6 f' ndi f ni rm. n ement 9f rad i throu h w ich he pi e. 2 ay.

operate. I I I v .It will beseen that unless -means are mh tir "seafnwinbi 4 e d. Pref a ably the. slot gear, 43 for the ball 7 0: is

r icsi35 and 35?". are set.

long enoi g hto compensate for tliejdianieter,.

ofth'ball lan dthieknessei pin 72.

'Froinfthefabove it til; he'seenthat all adframe 10 and carriage'l fionly. and all of the controlling mechanism tofnioyenients f the carrmgeli end-i9? -.d] ,1? l. 3.d '11s 1 of moyelnentarei on b UlLOII GJSIdG of the uStmQntSm-' inad upon one" side of Y the I I d mage. time" facilitating the asseinbling q thsien end i ipl i th ph mslm- Asthe spindle'carriage 15 is, inoyable vertically, it i's desiralolethat, a counter We g t be." p,f i t siii T eti fi tel coinponent. of 'the carriage inojve nent how;

eve prieyene' re, use t nf' f t nt:

Foi; this fetsg n;"'tte" table 65. to Rvhich the. weight 64Qisf attached passe oyenan idler 66 at the free end of a Vertically swinging. arm GY gan d is attached to the; carriageat one of its" forward portions. 1 It will thus be} seen that; the arm 67icaii'yingfthe idler p l y 661 ma'yiswi i eck" i orth n accordance \with "the horizontal inoyelnents 6 a ag w t sl 'bfie e m terbal'ancijng effect of the weight MI A lateral proje'ction i6 8 on the arni 67; lin its the swing dlitectionif T Referring to Rig," 7, the varyingspa eings clear: They are laid put ae'eiimelyjtje; indioate the combined eccentricity ofyfthe two ing.fino'yenieiit Tthisf'arni in one;

eccentriesfifianfd36 whenin ditferent an: I giila'r positions"relative toeacli other; It

isohyious tliat the coinhinede'ccentrieity of these. eccentrics, whibh replfie lt's. the. raditis more rapidly whilejthe tjcentrics are being.

Thief eeemrieit oi the compound t e. We 'Q-t tool head 15 vary most rapidly while the eccentrics are disposed in the angular positions for short throws of the tool head 15. This indicated by the closeness of the graduations for different small throws of the tool head. Similarly the throw, or radius of movement, of the tool head when the eccentfics are set for approximately their maximum throws have the graduations on the plate very widely spaced.

With the graduations 62 applied to the plate 63 in this manner so that they vary in spacings but each graduation indicates a particular are of movement rather than the particular angular disposition of the two members forming the compound eccentric, an operator is enabled to determine at sight exactly what radius of movement for which the eccentrics are set. On the other hand, with equal spacings of graduations, tables would have to be consulted to obtain the throw of the tool head corresponding to each particular setting of the eccentrics; or, another and more complicated mechanism would be required to enable equal spacings to be used to indicate equal differences in the throw of the tool head.

What I claim is:

1. A die sinking machine con prising in combination, a frame, a head mounted therein, a rotatable cutter carrying spindle mounted in said head, means for bodily moving said head in a closed path while the spindle is maintained always parallel in the plane of the closed path, means to vary the radius of movement of said head, said means to move said head and to vary its radius of movement being mounted upon one side of the head and frame, and means to indicate the adjustment for which the head is set.

2. A die sinking machine comprising in combination, a frame, a head mounted there in, a rotatable cutter carrying spindle mounted in said head, means for bodily moving said head in a closed path while the spindle is maintained always parallel in the plane of the closed path, adjusting means to vary the radius of movement of said head, said means to move said head and to vary its radius of movement being mounted upon one side of the head and frame, and means to lock the adjusting means in any desired adj ustment.

3. A die sinking machine comprising in combination, a frame, a head mounted there in, a rotatable cutter carrying spindle mounted in said head, means for bodily moving said head in a closed path while the spindle is maintained always parallel inthe plane of the closed path, adjusting means to vary the radius of movement of said head, said means to move said head and to vary its radius of movement being mounted upon one side of the head and frame, means to lock the adjusting means in any desired adj ustment, and means to indicate the adjustment for which the head is set.

4. A die sinking machine comprising in combination, a frame, a head mounted therein, a rotatable cutter carrying spindle. mounted in said head, means for bodily moving said head in a closed path while the spindle is maintained always parallel in the plane of the closed path, and worm and worm wheel means for varying the radius of movement of said head, said means to move said head and to vary its radius of movement being mounted on one side of the head and frame.

5. A die sinking machine comprising in coml'iination, a frame, a head mounted therein, a rotatable cutter carrying spindle mounted in said head, means for bodily moving said head in a closed path while the spindle is maintained always parallel in the plane of the closed path, worm and worm wheel means for varying the radius of movement of said head, said means to move said head and to vary its radius of movement being mounted on one side of the head and frame, and means to indicate the adjustment for which the head is set.

6. Adie sinking machine comprising in combination, a frame, a head mounted therein, a rotatable cutter carrying spindle mounted in said head, means for bodily moving said head in a closed path while the spindle is maintained alwaysparallel in the plane of the closed path, worm and worm wheel means for varying the radius of movement of said head, and means to lock the adjusting-means in any desired adjustment, said means to move said head and to vary its radius of movement being mounted on one side of the head and frame.

7. A die sinking machine comprising in combination, a fra .ie, ahead mounted there in, a rotatable cutter carrying spindle mounted in said head, means for bodily moving said head in a closed path, while the spindle is maintained always parallel in the plane of the closed path, worm and worm wheel means for varying the radius of'movement of said head, means to lock the adjusting means in any desired adjustment, means to move said head and to vary its radius of movement being mounted on one side of the head and frame, and means to indicate 'the adjustment for which the head is set.

8. A die sinking machine comprising in combination, a frame, a head mounted therein, a rotatable cutter carrying spindle mounted in said head, a worm and worm wheel means for bodily moving said head in a closed path while the spindle is maintained always parallel in the plane of the closed path, and worm and worm wheel' means to vary the radius of movement of said head, said means to move said head and side of the head and frame, and means to indicate the adjustments for which the head isset. i 10. A die sinking machine comprising in combination a frame,-a head mounted therein, a l rotatable euaerflearrying spindle mounted in saidjhead-a worm and worm wheel, means for bodily moving said head in a closed path while the spindle is mainrained always parallel in the plane er the closed path, worm and wormwheei means to vary the radius of movement ofsaid head, and 7 means to lock the adjusting means in 7 any desired -adji 1stment,said means to move said head and to vary It'S I ad IHSJO f movement being mounted on frame.v p

11-; A die sinkin'gmachine comprising in combination, a frame, ;a headniounted there one side of the head and in, a" rotatable cutter carrying mounted in said head, aiwor'in and worm wheel, means for teeny, moving "said" head in a closed path while the spindle is maintainedalways parallel in the plane of the closed 'ath, when and worm wheel means to var the radius of movemerit of said head; means to lock; the adjusting means inany desired adjustment, said means tomove said head and to vary its radius of movement being mounted Ion one side of the head and frame, and means to indicate the adjustments for which the head is set. I I

12. A die sinking machine comprising in combination, a frame, a head mounted therein, means for bodily moving said head relative to the frame while the spindleis main- I tained always parallel in the plane of the closed path, and means to lock the head in any position relative to the frame.

13. A combination, a frame, a headmounted therein, means for bodily moving said head relative to the frame in an arcuate path, a spin dle in said head maintained always parallel duringthe movement of the; head, and means to rotate said spindle while said head is being bodily moved, said means including a bevel gear fast to a driving shaft and retained in intermeshing relation with another bevel gear by means of a yoke member surrounding said dr ving shaft.-

die sinking machine comprising ina spindle iii' sjaid ii-era ,ma' aaiaa' always parallel during" the movement of the hem,

' and -ineahs to rotate said fs'pii dle'while said head 'is' beingbo'dily moved, said meansgim eluding a bevel gear fast tofa' driving shaft, another bevel gear fixed to'a shaft at right angles tosaid'driving shaft, and means surrounding bothof said shafts to retain said gears in interineshing relation.

1- Afldi'esinking machine comprising combination, afr'a'me, a head mounted there in, means forbodily moving said head rela relative to the frame in an 'Farcuate tive to the frame in an arcuate path, a

spindle in saidhead in'aintained always par: allel during the movement of the head, andv means to rotate said spindle while said head is bodily moved,-s'aid means including a bevel gear fast'to a driving "shaft, merri r bevel gear fixed to "shaft at right anfles to said driving shaft, and ayoke jmem er;

surrounding both of said gears and said shafts "as retain said gears in jintei-meshing relation. T

1 6. Adie sinking machine conip'rising in combination, a frame, a head mounted there in, means bodily said head relato theframe in an arcuate path-,5. inls aid'head In'aii tained always parallel jdurr ing the movement of the head, means to means to rotate said spindle while saidh ead is beingbodily moved,'said means including a main "driving shaft, a. driven shaft on said head, bevel gears connecting said shafts, a housing male -lag said gears and retaining them in mesh, and one of said shafts being axially movable with move meats in vone direction of the head.

A diejsinking machine comprising in combination-,;ja' frame, 'a head mounted therein, meansfor bodily waving aid head eiau v'e re the name-1m an eat-e pat a spindle ins'a'id head maintained always parallel during the movement of the head, means to manually vary the position ofthe head, and means to rotate said spindle while manually vary the position of the head, and

said head is being bodily moved, said means including av main driving shaft, a driven shaft on said head, bevel gears connecting said shafts, a housing enclosing said gears and retaining them in mesh, saiddriving shaft being axially movable with horizontal movements of the head.

' 18. A die sinking machine comprising in combination, a frame, a head mounted therein, means for bodily moving said head relative .to the frame, and counterbalancing;

means for said head comprising a weight,

a cablesiipporting said weightfattached to said hea and extending over a vertically swingingarm.

Ill)

19. A die sinking machine comprising in combinatio na frame, a head mounted therein, means for bodily moving said head relative to the frame, counterbalancing means for said head comprising a weight, a cable supporting said weight attached at one end to said head, a swinging arm over which said cable extends, and means to limit the swinging movement of the arm.

20. A die sinking machine comprising in combination, a frame, a head mounted therein, a rotatable cutter carrying spindle mounted in said head, means for bodily moving said head in a closed arcuate path while the spindle is maintained always parallel, means to vary the radius of movement of said head, and means to indicate the radius of movement for which the head is set.

21. A die sinking machine comprising in combination, a frame, a head mounted therein, a rotatable cutter carrying spindle mounted in said head, means for bodily moving said head in a closed arcuate path while the spindle is maintained always parallel, means to vary the radius of movement of said head, and a circular series of graduations to indicate the radius of movement for which the head is set.

22. A die sinking machine comprising in combination, a frame, a head mounted therein, a rotatable cutter carrying spindle mounted in said head, means for bodily moving said head in a closed arcuate path while the spindle is maintained always parallel, means to vary the radius of movement of said head, and graduations extending completely about a circular disk and so spaced thereon to indicate uniform differences in diameter for which the head is set.

23. A die sinking machine comprising in vcombination, a frame, a head mounted therein,a rotatable cutter carrying spindle mounted in said head, means for bodily moving said head in a closed arcuate path while the spindle is maintained always parallel, two circular members the angular position of which may be varied to change the radius of operation ofthe head, and graduations on one of said members so disposed to indicate different radii for which the head is set.

24. A die sinking machine comprising in combination, a frame, a head mounted therein, a rotatable cutter carrying spindle mounted in said head, means for bodily moving said head in a closed arcuate path while the' spindle is maintained always parallel, means to vary the radius or" movement of said head, and irregularly spaced graduations to indicate the radius of movement for which the means for bodily movins the head are set.

25. A die sinking machine comprising in combination, a frame, a head mounted therein, a rotatable cutter carrying spindle mounted in said-head, pairs of compound eccentrics for bodily moving said head in a closed arcuate path while the spindleis maintained always parallel, means to vary the radius of movement of said head, and irregularly spaced graduations to indicate the radius of movement for which the'said pairs of compound eccentrics for bodily moving the head are set.

26. A die sinking machine comprising in combination, a frame, a head mounted therein, a rotatable cutter carrying spindle mounted in said head, pairs'of compound eccentrics for bodily moving said head in a closed arcuate path while the spindle is maintained always parallel, means to vary the relative angular positions of the members of the compound eccentrics to vary the radius of movement of said head, and graduations on one of the members for bodily moving the head to indicate the radius of movement for which said means are adjusted.

In testimony whereof, I hereto aflix my signature.

LOUIS G. BAYRER. 

